/*
 *
 *  * Copyright (C) 2015 Square, Inc.
 *  *
 *  * Licensed under the Apache License, Version 2.0 (the "License");
 *  * you may not use this file except in compliance with the License.
 *  * You may obtain a copy of the License at
 *  *
 *  *      http://www.apache.org/licenses/LICENSE-2.0
 *  *
 *  * Unless required by applicable law or agreed to in writing, software
 *  * distributed under the License is distributed on an "AS IS" BASIS,
 *  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  * See the License for the specific language governing permissions and
 *  * limitations under the License.
 *
 */
package com.lark.oapi.okhttp;

import com.lark.oapi.okhttp.internal.connection.RealConnectionPool;

import java.util.concurrent.TimeUnit;

/**
 * Manages reuse of HTTP and HTTP/2 connections for reduced network latency. HTTP requests that
 * share the same {@link Address} may share a {@link Connection}. This class implements the policy
 * of which connections to keep open for future use.
 */
public final class ConnectionPool {

    final RealConnectionPool delegate;

    /**
     * Create a new connection pool with tuning parameters appropriate for a single-user application.
     * The tuning parameters in this pool are subject to change in future OkHttp releases. Currently
     * this pool holds up to 5 idle connections which will be evicted after 5 minutes of inactivity.
     */
    public ConnectionPool() {
        this(5, 5, TimeUnit.MINUTES);
    }

    public ConnectionPool(int maxIdleConnections, long keepAliveDuration, TimeUnit timeUnit) {
        this.delegate = new RealConnectionPool(maxIdleConnections, keepAliveDuration, timeUnit);
    }

    /**
     * Returns the number of idle connections in the pool.
     */
    public int idleConnectionCount() {
        return delegate.idleConnectionCount();
    }

    /**
     * Returns total number of connections in the pool.
     */
    public int connectionCount() {
        return delegate.connectionCount();
    }

    /**
     * Close and remove all idle connections in the pool.
     */
    public void evictAll() {
        delegate.evictAll();
    }
}
